Structural Order and Vibrational Relaxation of Phenylacetylene in Benzene in Liquid Solutions and Frozen Matrices at Low Temperatures. Raman Spectra of Phenylacetylene in Benzene at 77 K

1999 ◽  
Vol 103 (38) ◽  
pp. 7580-7586 ◽  
Author(s):  
H. Abramczyk ◽  
G. Waliszewska ◽  
B. Brozek
Keyword(s):  
Raman Spectra ◽  
Vibrational Relaxation ◽  
Low Temperatures ◽  
Structural Order ◽  
Liquid Solutions

scholarly journals Darstellung von Cyclopentadekaschwefel (S15) aus Titanocenpentasulfid und Sulfurylchlorid [1]

1988 ◽  
Vol 43 (9) ◽  
pp. 1151-1155 ◽  
Author(s):  
Reinhard Strauss ◽  
Ralf Steudel
Keyword(s):  
Raman Spectra ◽  
Low Temperatures ◽  
Yellow Powder ◽  
Sulfuryl Chloride ◽  
Lemon Yellow ◽  
Stretching Vibrations

Abstract Titanocene pentasulfide reacts with sulfuryl chloride under suitable conditions to give a mixture of mainly S10, S15, and S20 which can be separated by repeated crystallization and precipitation. Pure S15 is obtained as a lemon-yellow powder at low temperatures which transforms to a sticky mass at 20 °C. Solutions of S15 in CS2 are stable at 20 °C for months. Pure S15 does not decompose at 20 °C within a few hours. Raman spectra of S15 show stretching vibrations at 409-480 cm-1 and bending and torsional modes at < 270 cm-1.

Raman spectra of selenious acid at low temperatures

2000 ◽  
Vol 31 (12) ◽  
pp. 1057-1060
Author(s):  
Angela Sanders ◽  
Marilyn Louie ◽  
A. Anderson
Keyword(s):  
Raman Spectra ◽  
Low Temperatures ◽  
Selenious Acid

The Raman spectra of liquid solutions

1939 ◽  
Vol 9 (2) ◽  
pp. 105-108 ◽  
Author(s):  
A. E. Brodskii ◽  
A. M. Sack ◽  
L. V. Kortchagin
Keyword(s):  
Raman Spectra ◽  
Liquid Solutions

IR and Raman spectra of AgNO3 at low temperatures

1992 ◽  
Vol 23 (9) ◽  
pp. 509-514 ◽  
Author(s):  
Z. X. Shen ◽  
W. F. Sherman ◽  
M. H. Kuok ◽  
S. H. Tang
Keyword(s):  
Raman Spectra ◽  
Low Temperatures ◽  
Ir And Raman Spectra ◽  
Ir And Raman

scholarly journals Photolysis of frozen iodate salts as a source of active iodine in the polar environment

2016 ◽  
Vol 16 (19) ◽  
pp. 12703-12713 ◽  
Author(s):  
Óscar Gálvez ◽  
M. Teresa Baeza-Romero ◽  
Mikel Sanz ◽  
Alfonso Saiz-Lopez
Keyword(s):  
Cross Section ◽  
Low Temperatures ◽  
Atmospheric Model ◽  
Ir Absorption ◽  
Absorption Cross ◽  
Solar Simulator ◽  
Near Ultraviolet ◽  
Polar Environment ◽  
Liquid Solutions ◽  
Ir Bands

Abstract. Reactive halogens play a key role in the oxidation capacity of the polar troposphere. However, sources and mechanisms, particularly those involving active iodine, are still poorly understood. In this paper, the photolysis of an atmospherically relevant frozen iodate salt has been experimentally studied using infrared (IR) spectroscopy. The samples were generated at low temperatures in the presence of different amounts of water. The IR spectra have confirmed that, under near-ultraviolet–visible (UV–Vis) radiation, iodate is efficiently photolysed. The integrated IR absorption coefficient of the iodate anion on the band at 750 cm−1 has been measured to be A  =  9.8 ± 0.5  ×  10−17 cm molecule−1. The photolysis rate of the ammonium iodate salt was measured by monitoring the decay of ammonium or iodate IR bands (1430 and 750 cm−1 respectively) in the presence of a solar simulator. The absorption cross section of the liquid solutions of ammonium iodate at wavelengths relevant for the troposphere (250 to 400 nm) has been obtained and used to estimate the photolytic quantum yield for the frozen salt. Finally, using an atmospheric model, constrained with the experimental data, we suggest that the photolysis of iodate in frozen salt can potentially provide a pathway for the release of active iodine to the polar atmosphere.

Vibrational relaxation of CH 3 F in a krypton matrix at low temperatures. Influence of the rotation

1977 ◽  
Vol 23 (3) ◽  
pp. 443-450 ◽  
Author(s):  
L. Abouaf-Marguin ◽  
B. Gauthier-Roy ◽  
F. Legay
Keyword(s):  
Vibrational Relaxation ◽  
Low Temperatures
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